What should you do if your horse comes back from training worse than when it left?

A horse that comes back from training worse than when it left — more fearful, more resistant, harder to handle, or showing physical signs of stress or injury — is in a situation that requires both immediate action and honest assessment of what happened. The first priority is the horse's welfare. Have a veterinarian evaluate the horse for physical injury or pain that may be contributing to behavioral changes. A horse that developed resistance or fear responses during training may have a pain component — soreness, injury, or equipment-related discomfort — that needs to be identified and addressed before any retraining is attempted. Document the horse's current condition carefully — video, veterinary records, photographs — before taking any other steps. This documentation is important if you need to address the situation with the trainer formally or through legal channels, and it establishes a clear baseline for whatever rehabilitation the horse needs. Communicate directly with the trainer about what you are observing. A trainer who responds defensively, who blames the horse entirely, or who denies that any change has occurred is not a trainer who is going to help you resolve the situation. A trainer who acknowledges the concern, provides an explanation, and takes responsibility for their role in the outcome is responding professionally even if the explanation is difficult to hear. The rehabilitation process for a horse that has been adversely affected by training requires patience and typically a period of low pressure — time off, gentle handling, relationship rebuilding — before any structured training resumes. Warwick Schiller's framework for working with horses that have had negative training experiences is directly applicable: go slow, work below the horse's threshold, and rebuild trust before rebuilding skills.